Place the Floppy into the Floppy drive and turn the computer on. Ensure your computer has booting from Floppy enabled (this is a function of the BIOS so you made need to go into the BIOS setup program at boot time). You will be asked to press Enter to boot Debian-do so. This will stop with a request for a root floppy or a USB stick. Plug the USB stick into the new machine and press Enter to continue.